PHILIPS ELECTRONICS -LIGHT 499004 Fluorescent Ballast Electronic 1, 2 Lamps 120 - 277 V,

The REDiTEST B30ST emergency ballast works in conjunction with an AC ballast to convert new or existing fluorescent fixtures into emergency lighting. The emergency ballast consists of a high-temperature nickel-cadmium battery, charger and electronic circuitry in one red case. The B30ST can be used with most 17 - 215 W (2’ - 8’) T5, T8, T9, T10 or T12 fluorescent lamps without integral starters, including U-shaped, HO, VHO, circline and energy-saving, and (4-pin) twin, quad and triple twin-tube compacts. One- or two-lamp operation may be selected. It is also compatible with most one-, two-, three- and four-lamp electronic, standard, energy-saving and dimming AC ballasts. If used in an emergency-only fixture, no AC ballast is necessary. The B30ST is suitable for indoor and damp locations. It is not suitable for air handling heated air outlets or wet or hazardous locations.